Dirt(y) Red Nugget Lentil Shepherd’s Pie with Potato and Celeriac Mash - Gourmet Gurus, Mains Recipe

Ingredients

• 150 g dirt(y) red nugget lentils soaked overnight in cold water
• 3 tbsp olive oil
• 1 onion, diced
• 2 cloves garlic, crushed
• 2 stalks celery (including the heart), diced
• 1 carrot, diced
• 1 tsp caraway seeds
• 1 sprig rosemary
• 2 bay leaves
• 4 sprigs thyme
• 100 g button or field mushrooms, diced
• 25 ml red-wine vinegar
• 1 tbsp tomato paste
• 10 g dried wild mushroom mix, ground to a find powder in a spice grinder (available at good gourmet grocers)
• 200 g tinned diced tomatoes
• 2 tsp sea salt
• cracked black pepper
• 2 tsp finely grated lemon zest (about 1/2 lemon run through a zester)
• 75 g green beans, cut into 1 cm lengths
• loose handful of flat leaf parsley leaves, chopped
• some really good tomato sauce, to serve
• 375 g celeriac, peeled and cut into 3 cm chunks
• 375 g starchy potatoes, peeled and cut into 3 cm chunks
• 100 g butter
• 150 ml milk
• 1/2 cup grated parmesan
• 1/4 tsp ground mace
• cracked white pepper